Закончить уравнения реакции,расставить коэффициенты: C+O2->?+Q S+O2->? P+O2->? N2+?->NO-Q Mg+?->MgO Fe+?->Fe3O4 Ca+O2->? Cu+?-> CuO N2+?->NO

Fill in : gone to, been to, been in.Вставьте в пропусках! 1 .Can we leave not,please?We "ve ..........this shop for two hours! 2. Tina has.........................the bank ,would you like to wait until she comes back? 3. We haven"t ..............the flea market for ages.Do you want to go next week? 4. How long have you ........................this country? 5. Ivan hasn"t............................the library.He"s upstairs, in his room. 6. Have you ever .......................the Bolshoi Theatre?

складіть правила запобігання інфекційним захворюванням